HELP ASAP. WILL GIVE BRAINLIEST. BEING TIMED HURRY Choose all the answers that apply.
Which of the following statements is true?
Decreasing force increases an object's acceleration, where mass is constant.
Friction works in the direction opposite of motion.
Increasing mass increases an object's inertia.
| Increasing mass decreases an object's acceleration, where force is constant.

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?